A process can opt-out of coredump creation by calling
prctl(PR_SET_DUMPABLE, 0).
linux-user passes this call from the guest through to the
operating system.
>From there it can be read back again to avoid creating coredumps from
qemu-user itself if the guest chose so.
Reviewed-by: Richard Henderson <richard.hender...@linaro.org>
Signed-off-by: Thomas Weißschuh <tho...@t-8ch.de>
---
linux-user/elfload.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/linux-user/elfload.c b/linux-user/elfload.c
index c5968719380a..daf7ef843564 100644
--- a/linux-user/elfload.c
+++ b/linux-user/elfload.c
@@ -2,6 +2,7 @@
#include "qemu/osdep.h"
#include <sys/param.h>
+#include <sys/prctl.h>
#include <sys/resource.h>
#include <sys/shm.h>
@@ -4667,6 +4668,11 @@ static int elf_core_dump(int signr, const CPUArchState
*env)
init_note_info(&info);
errno = 0;
+
+ if (prctl(PR_GET_DUMPABLE) == 0) {
+ return 0;
+ }
+
if (getrlimit(RLIMIT_CORE, &dumpsize) == 0 && dumpsize.rlim_cur == 0) {
return 0;
}
--
2.43.0
